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研究生:黃昭霖
研究生(外文):Chao-Lin Huang
論文名稱:降低植物工廠內萵苣能源消耗之探討 -以變動光量或二氧化碳濃度之即時調控為策略
論文名稱(外文):Study on Reducing Energy Consumption of Lettuce Production in Plant Factory - Real-Time Control Strategy by Adjusting Light Intensity and CO2 Concentration
指導教授:周立強周立強引用關係
指導教授(外文):Li-Joh Jou
口試委員:方煒鄔家琪
口試委員(外文):Wei FangChia-Chyi Wu
口試日期:2012-07-23
學位類別:碩士
校院名稱:國立宜蘭大學
系所名稱:生物機電工程學系碩士班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2013
畢業學年度:101
語文別:中文
論文頁數:66
中文關鍵詞:植物工廠光合作用植物照明
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在全環控型植物工廠中,植物的光合作用完全依賴人工光源,然而電能消耗過高,一直為人所詬病。因此如何有效地利用光能成為植物工廠發展的重要研究課題之一。本研究分成兩個主題,分別隨萵苣光合速率變化調控光量與二氧化碳濃度,期許找出能找出既能維持萵苣鮮重表現並能減少栽培耗能的栽培模式。
本文結合利用 2 種控制系統作為控制核心,分別以可程式控制 (PLC) 與圖控室語言 (LabView) 建立 2 間環控室。環控室內包含空調設備、植物栽培層架、養液循環系統、LED燈管與監控系統。並透過 LabView 讀取 PLC 內部的資料結合 Web service,使用者可以透過網際網路遠端監控兩間環控室內部資訊。
本研究嘗試以萵苣的光合速率長週期 (4、8 小時) 變化調控栽培光量,結果顯示 4 全開 4 閃爍處理在萵苣的鮮重表現上與固定光量處理沒顯著差異,且收穫型態上較無葉燒的型態。
本研究另一個策略是依萵苣光合速率的即時變化調整二氧化碳濃度,結果顯示光量在 150 μmol m-2 s-1的條件下,依據植物光合作用需求變動二氧化碳處理組,收獲重相近於 250 μmol m-2 s-1 / 固定 1200 ppm 的處理,而燈管電能與二氧化碳成本僅為後者的 77.7%,代表變動二氧化碳的控制策略能以較少的成本栽培出同重的萵苣。

In the closed-type plant factory, the plant’s photosynthesis relies on the artificial lighting completely. High energy consumption in plant illumination constrains the business development. Hence it is important to improve the lighting energy utility in plant factory. This study conducted two approaches, depending on the lettuce photosynthetic rate to control the lighting regimes or CO2 regimes, to improve the energy utility in lettuce cultivation in the plant factory.
Two control systems were developed in this study. One was the system with the Programmable Logic Controller (PLC) and the other was the system by using the personal computer with the graphic-based programming software (LabView). In the environmental controlled chamber there was equipped with air conditioner, plant cultivation shelves, nutrient solution circulation system, LED tubes and the environmental control system. The user monitored the data in these two systems via Internet associating with the LabView software and web service to access the control data in the PLC or the computer.
One of the strategies to reduce energy consumption in plant factory was to control the fluctuation of light intensity by four and eight hour-period based on daily photosynthetic rhythm. The result showed that treatment of 4-full-4-flash reduced the tipburn occurrence and was not significantly different in lettuce’s fresh weight compared with the treatment of constant light intensity.
Another strategy was to vary CO2 concentration based on the lettuce photosynthetic rate. The result showed the lettuce’s fresh weight in treatment of varied CO2 concentration was equal to that in the treatment of 250 μmol m-2 s-1/ 1200 ppm. However, the former cost in LED energy consumption and CO2 was only 77.7% of the latter. This result represented that the strategy by varying CO2 concentration based on the lettuce photosynthetic rate could produce lettuce by less cost.

摘要 i
Abstract ii
致謝 iv
目錄 v
圖目錄 vii
表目錄 viii
第一章 前言與研究目的 1
第二章 文獻探討 3
2-1 光合速率日變化 3
2-2 植物工廠電力消耗 4
2-3 環控室內種植萵苣的研究 6
第三章 環控室的建立與控制器開發 11
第四章 材料與方法 20
4-1 植物栽培環境 20
4-1-1 植物立體栽培層架與栽培水槽 20
4-1-2 作物栽培光源與光場量測 21
4-2 實驗一-隨萵苣光合速率變化調控光量對萵苣的影響 22
4-2-1 恆定環境下萵苣的光合速率變化 22
4-2-2 探討不同給光策略對萵苣生長之影響 23
4-3 實驗二-隨萵苣光合速率變化調控二氧化碳濃度對萵苣的影響 25
4-4 分析方法 28
第五章 結果與討論 31
5-1恆定環境下萵苣光合作用速率日韻律變化 31
5-2 變動光量給光策略對萵苣生長之影響 32
5-3變動二氧化碳濃度策略對萵苣生長的影響 35
第六章 結論與建議 41
6-1 結論 41
6-2 建議 42
參考文獻 43
附錄 46

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